QOL
QGL
TOL
QNL
Answer is Right!
Answer is Wrong!
The correct answer is (a) QOL.
The series is a simple substitution cipher, where each letter is replaced by the letter three places after it in the alphabet. So, Y becomes Q, E becomes O, B becomes L, and so on.
The next letter in the series is Q, followed by O, L, and so on. This gives us the word QOL.
The other options are incorrect because they do not follow the pattern of the series.